Biology - Chapter 12 - Genetics Flashcards
cross of two different traits
i.e. tall, purple flower with short, white flower
dihybrid cross
cross of one different trait
i.e. purple flower with white flower
monohybrid cross
something that can be passed down
i.e. eye color
character
different form of a character
i.e. for eye color there are different traits such as blue, green, etc.
trait
sequence of DNA that controls a specific character
i.e. eye color gene
gene
different forms of a gene
i.e. dominant or recessive allele and brown eye allele or ble eye allele
allele
trait that is always expressed when its allele is present
dominant
trait that is hidden when dominant allele is present
recessive
a combination of alleles
i.e. TT, Tt, and tt
genotype
a physical appearance that is the result of alleles
i.e. tall or short
phenotype
two of the same alleles
homozygous dominant = TT; homozygous recessive = tt
homozygous
combination of two different alleles
Tt
heterozygous